#include<stdio.h>

int main004(void) {
	char letter = 'a';
	unsigned char uchar = 200;
	signed char schar = -100;

	printf("char letter = %c\n", letter);
	printf("unsigned char uchar = %u\n", uchar);
	printf("signed char schar = %d\n", schar);

	return 0;
}